On Sat, Apr 10, 2021 at 03:06:52PM +0100, Matthew Wilcox wrote:
> How about moving the flags into the union? A bit messy, but we don't
> have to play games with __packed__.
Yes, that is probably the better solution, avoiding the games to try
and get the union appropriately placed on 32-bit
On Wed, Mar 17, 2021 at 09:52:10AM +0800, Kefeng Wang wrote:
> mem_init_print_info() is called in mem_init() on each architecture,
> and pass NULL argument, so using void argument and move it into mm_init().
>
> Acked-by: Dave Hansen
> Signed-off-by: Kefeng Wang
Acked-by: Russell King # for
On Mon, Mar 22, 2021 at 06:10:01PM +0100, Cye Borg wrote:
> PWS 500au:
>
> snow / # lspci -vvx -s 7.1
> 00:07.1 IDE interface: Contaq Microsystems 82c693 (prog-if 80 [ISA
> Compatibility mode-only controller, supports bus mastering])
> Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV-
On Mon, Mar 22, 2021 at 04:33:14PM +0100, Christoph Hellwig wrote:
> On Mon, Mar 22, 2021 at 04:18:23PM +0100, Christoph Hellwig wrote:
> > On Mon, Mar 22, 2021 at 03:15:03PM +, Russell King - ARM Linux admin
> > wrote:
> > > It gets worse than that though - d
On Mon, Mar 22, 2021 at 05:09:13PM +0100, John Paul Adrian Glaubitz wrote:
> On 3/22/21 4:15 PM, Russell King - ARM Linux admin wrote:
> > I'm quite surprised that the CY82C693 even works on Alpha - I've
> > asked for a lspci for that last week but nothing has yet been
> > for
On Mon, Mar 22, 2021 at 04:18:23PM +0100, Christoph Hellwig wrote:
> On Mon, Mar 22, 2021 at 03:15:03PM +0000, Russell King - ARM Linux admin
> wrote:
> > It gets worse than that though - due to a change to remove
> > pcibios_min_io from the generic code, moving it into the AR
On Mon, Mar 22, 2021 at 03:54:03PM +0100, Christoph Hellwig wrote:
> On Fri, Mar 19, 2021 at 05:53:12PM +0000, Russell King - ARM Linux admin
> wrote:
> > If I extend the arch/arm/kernel/bios32.c code to kill BARs 2/3 (which
> > actually are not present on the CY82C693) then th
On Fri, Mar 19, 2021 at 05:07:53PM +, Russell King - ARM Linux admin wrote:
> On Thu, Mar 18, 2021 at 05:56:58AM +0100, Christoph Hellwig wrote:
> > footbridge_defconfig enables CONFIG_IDE but no actual host controller
> > driver, so just drop it.
>
> I have been using t
On Thu, Mar 18, 2021 at 05:56:58AM +0100, Christoph Hellwig wrote:
> footbridge_defconfig enables CONFIG_IDE but no actual host controller
> driver, so just drop it.
I have been using the Cypress 82C693 IDE driver on Footbridge for a
CD ROM drive, and I know it doesn't work with the PATA driver -
On Tue, Feb 02, 2021 at 07:47:04PM +0800, Ding Tianhong wrote:
> On 2021/2/2 19:13, Russell King - ARM Linux admin wrote:
> > On Tue, Feb 02, 2021 at 09:05:02PM +1000, Nicholas Piggin wrote:
> >> diff --git a/arch/arm/include/asm/pgtable.h
> >> b/arch/arm/inclu
On Tue, Feb 02, 2021 at 09:05:02PM +1000, Nicholas Piggin wrote:
> diff --git a/arch/arm/include/asm/pgtable.h b/arch/arm/include/asm/pgtable.h
> index c02f24400369..d63a5bb6bd0c 100644
> --- a/arch/arm/include/asm/pgtable.h
> +++ b/arch/arm/include/asm/pgtable.h
> @@ -166,6 +166,9 @@ extern
On Wed, Dec 30, 2020 at 10:00:28AM +, Russell King - ARM Linux admin wrote:
> On Wed, Dec 30, 2020 at 12:33:02PM +1000, Nicholas Piggin wrote:
> > Excerpts from Russell King - ARM Linux admin's message of December 29, 2020
> > 8:44 pm:
> > > On Tue, Dec 29, 2020 at 01
On Wed, Dec 30, 2020 at 12:33:02PM +1000, Nicholas Piggin wrote:
> Excerpts from Russell King - ARM Linux admin's message of December 29, 2020
> 8:44 pm:
> > On Tue, Dec 29, 2020 at 01:09:12PM +1000, Nicholas Piggin wrote:
> >> I think it should certainly be documented in terms of what guarantees
On Tue, Dec 29, 2020 at 01:09:12PM +1000, Nicholas Piggin wrote:
> I think it should certainly be documented in terms of what guarantees
> it provides to application, _not_ the kinds of instructions it may or
> may not induce the core to execute. And if existing API can't be
> re-documented
On Mon, Dec 28, 2020 at 11:44:33AM -0800, Andy Lutomirski wrote:
> On Mon, Dec 28, 2020 at 11:09 AM Russell King - ARM Linux admin
> wrote:
> >
> > On Mon, Dec 28, 2020 at 07:29:34PM +0100, Jann Horn wrote:
> > > After chatting with rmk about this (bu
On Mon, Dec 28, 2020 at 07:29:34PM +0100, Jann Horn wrote:
> After chatting with rmk about this (but without claiming that any of
> this is his opinion), based on the manpage, I think membarrier()
> currently doesn't really claim to be synchronizing caches? It just
> serializes cores. So arguably
On Mon, Dec 28, 2020 at 09:14:23AM -0800, Andy Lutomirski wrote:
> On Mon, Dec 28, 2020 at 2:25 AM Russell King - ARM Linux admin
> wrote:
> >
> > On Sun, Dec 27, 2020 at 01:36:13PM -0800, Andy Lutomirski wrote:
> > > On Sun, Dec 27, 2020 at 12:18 PM Mat
On Sun, Dec 27, 2020 at 01:36:13PM -0800, Andy Lutomirski wrote:
> On Sun, Dec 27, 2020 at 12:18 PM Mathieu Desnoyers
> wrote:
> >
> > - On Dec 27, 2020, at 1:28 PM, Andy Lutomirski l...@kernel.org wrote:
> >
>
> > >
> > > I admit that I'm rather surprised that the code worked at all on
On Tue, Jul 14, 2020 at 03:01:09PM +0200, Peter Zijlstra wrote:
> On Tue, Jul 14, 2020 at 03:19:24PM +0300, Ard Biesheuvel wrote:
> > So perhaps the answer is to have text_alloc() not with a 'where'
> > argument but with a 'why' argument. Or more simply, just have separate
> > alloc/free APIs for
On Tue, Jul 14, 2020 at 01:17:22PM +0300, Ard Biesheuvel wrote:
> On Tue, 14 Jul 2020 at 12:53, Jarkko Sakkinen
> wrote:
> >
> > On Mon, Jul 13, 2020 at 10:49:48PM +0300, Ard Biesheuvel wrote:
> > > This patch suggests that there are other reasons why conflating
> > > allocation of module space
On Tue, Jul 14, 2020 at 12:49:28PM +0300, Jarkko Sakkinen wrote:
> On Mon, Jul 13, 2020 at 07:34:10PM +0100, Russell King - ARM Linux admin
> wrote:
> > On Mon, Jul 13, 2020 at 09:19:37PM +0300, Jarkko Sakkinen wrote:
> > > Rename module_alloc() to text_alloc
On Tue, Jul 14, 2020 at 12:45:36PM +0300, Jarkko Sakkinen wrote:
> Rename module_alloc() to text_alloc() and module_memfree() to
> text_memfree(), and move them to kernel/text.c, which is unconditionally
> compiled to the kernel proper. This allows kprobes, ftrace and bpf to
> allocate space for
On Mon, Jul 13, 2020 at 09:19:37PM +0300, Jarkko Sakkinen wrote:
> Rename module_alloc() to text_alloc() and module_memfree() to
> text_memfree(), and move them to kernel/text.c, which is unconditionally
> compiled to the kernel proper. This allows kprobes, ftrace and bpf to
> allocate space for
On Tue, Apr 21, 2020 at 03:49:19AM +0100, Al Viro wrote:
> The only source I'd been able to find speeks of >= 60 cycles
> (and possibly much more) for non-pipelined coprocessor instructions;
> the list of such does contain loads and stores to a bunch of registers.
> However, the register in
On Wed, Apr 08, 2020 at 08:58:16PM +0200, Arnd Bergmann wrote:
> A 1024 byte variable on the stack will warn on any 32-bit architecture
> during compile-testing, and is generally a bad idea anyway:
>
> fsl/dpio/dpio-service.c: In function
> 'dpaa2_io_service_enqueue_multiple_desc_fq':
>
On Wed, Apr 08, 2020 at 01:58:58PM +0200, Christoph Hellwig wrote:
> Hi all,
>
> Peter noticed that with some dumb luck you can toast the kernel address
> space with exported vmalloc symbols.
>
> I used this as an opportunity to decruft the vmalloc.c API and make it
> much more systematic. This
On Fri, Apr 03, 2020 at 12:26:10PM +0100, Catalin Marinas wrote:
> On Fri, Apr 03, 2020 at 01:58:31AM +0100, Al Viro wrote:
> > On Thu, Apr 02, 2020 at 11:35:57AM -0700, Kees Cook wrote:
> > > Yup, I think it's a weakness of the ARM implementation and I'd like to
> > > not extend it further. AFAIK
On Thu, Apr 02, 2020 at 11:35:57AM -0700, Kees Cook wrote:
> On Thu, Apr 02, 2020 at 06:50:32PM +0100, Al Viro wrote:
> > On Thu, Apr 02, 2020 at 07:03:28PM +0200, Christophe Leroy wrote:
> >
> > > user_access_begin() grants both read and write.
> > >
> > > This patch adds
On Fri, Apr 03, 2020 at 01:58:31AM +0100, Al Viro wrote:
> On Thu, Apr 02, 2020 at 11:35:57AM -0700, Kees Cook wrote:
>
> > Yup, I think it's a weakness of the ARM implementation and I'd like to
> > not extend it further. AFAIK we should never nest, but I would not be
> > surprised at all if we
On Sun, Feb 16, 2020 at 10:18:30AM +0200, Mike Rapoport wrote:
> From: Mike Rapoport
>
> Hi,
>
> These patches convert several architectures to use page table folding and
> remove __ARCH_HAS_5LEVEL_HACK along with include/asm-generic/5level-fixup.h.
>
> The changes are mostly about mechanical
On Tue, Feb 11, 2020 at 06:33:47AM +0100, Christophe Leroy wrote:
>
>
> Le 11/02/2020 à 03:25, Anshuman Khandual a écrit :
> >
> >
> > On 02/10/2020 04:36 PM, Russell King - ARM Linux admin wrote:
> > > There are good reasons for the way ARM does stuff.
On Mon, Feb 10, 2020 at 11:46:23AM +0100, Christophe Leroy wrote:
>
>
> Le 10/02/2020 à 11:02, Russell King - ARM Linux admin a écrit :
> > On Mon, Feb 10, 2020 at 07:38:38AM +0100, Christophe Leroy wrote:
> > >
> > >
> > > Le 10/
On Mon, Feb 10, 2020 at 07:38:38AM +0100, Christophe Leroy wrote:
>
>
> Le 10/02/2020 à 06:35, Anshuman Khandual a écrit :
> >
> >
> > On 02/10/2020 10:22 AM, Andrew Morton wrote:
> > > On Thu, 6 Feb 2020 13:49:35 +0530 Anshuman Khandual
> > > wrote:
> > >
> > > >
> > > > On 02/06/2020
On Fri, Nov 08, 2019 at 04:28:30PM +, Dmitry Safonov wrote:
> On 11/6/19 8:34 PM, Peter Zijlstra wrote:
> > On Wed, Nov 06, 2019 at 04:27:33PM +, Dmitry Safonov wrote:
> [..]
> >> Sorry, I should have tried to describe better.
> >>
> >> I'm trying to remove external users of
On Wed, Nov 06, 2019 at 09:34:40PM +0100, Peter Zijlstra wrote:
> I suppose I'm surprised there are backtraces that are not important.
> Either badness happened and it needs printing, or the user asked for it
> and it needs printing.
Or utterly meaningless.
> Perhaps we should be removing
On Wed, Oct 23, 2019 at 08:52:33AM -0500, Rob Herring wrote:
> > I think this should have been done the other way around and default to
> > coherent since most traditional OF platforms are coherent, and you
> > can't just require those DTs to change.
>
> You can blame me. This was really only
On Wed, Oct 23, 2019 at 08:52:33AM -0500, Rob Herring wrote:
> On Wed, Oct 23, 2019 at 1:41 AM Benjamin Herrenschmidt
> wrote:
> >
> > On Wed, 2019-10-23 at 16:42 +1100, Michael Ellerman wrote:
> > >
> > > Right, it seems of_dma_is_coherent() has baked in the assumption that
> > > devices are
I'm sorry, I can't apply this, it produces loads of:
include/linux/error-injection.h:7:10: fatal error: asm/error-injection.h: No
such file or directory
Since your patch 1 has been merged by the ARM64 people, I can't take
it until next cycle.
On Mon, Aug 19, 2019 at 05:18:08PM +0800, Leo Yan
On Tue, Aug 06, 2019 at 05:08:54PM +0100, Will Deacon wrote:
> On Sat, Aug 03, 2019 at 08:48:12AM +0200, Christoph Hellwig wrote:
> > On Fri, Aug 02, 2019 at 11:38:03AM +0100, Will Deacon wrote:
> > >
> > > So this boils down to a terminology mismatch. The Arm architecture
> > > doesn't have
> >
On Tue, Aug 06, 2019 at 05:45:03PM +0100, Russell King - ARM Linux admin wrote:
> On Tue, Aug 06, 2019 at 05:08:54PM +0100, Will Deacon wrote:
> > On Sat, Aug 03, 2019 at 08:48:12AM +0200, Christoph Hellwig wrote:
> > > On Fri, Aug 02, 2019 at 11:38:03AM +0100,
On Fri, Mar 22, 2019 at 10:30:08AM -0400, Waiman Long wrote:
> Modify __down_read_trylock() to optimize for an unlocked rwsem and make
> it generate slightly better code.
>
> Before this patch, down_read_trylock:
>
>0x <+0>: callq 0x5
>0x0005 <+5>:
On Fri, Jan 25, 2019 at 03:43:59PM +, Catalin Marinas wrote:
> On Fri, Jan 18, 2019 at 05:18:13PM +0100, Arnd Bergmann wrote:
> > diff --git a/arch/arm/tools/syscall.tbl b/arch/arm/tools/syscall.tbl
> > index 86de9eb34296..20ed7e026723 100644
> > --- a/arch/arm/tools/syscall.tbl
> > +++
On Fri, Jan 18, 2019 at 11:53:25AM -0800, Andy Lutomirski wrote:
> On Fri, Jan 18, 2019 at 11:33 AM Arnd Bergmann wrote:
> >
> > On Fri, Jan 18, 2019 at 7:50 PM Andy Lutomirski wrote:
> > > On Fri, Jan 18, 2019 at 8:25 AM Arnd Bergmann wrote:
> > > > - Once we get to 512, we clash with the x32
On Thu, Jan 10, 2019 at 05:24:35PM +0100, Arnd Bergmann wrote:
> Most architectures define system call numbers for the rseq and pkey system
> calls, even when they don't support the features, and perhaps never will.
>
> Only a few architectures are missing these, so just define them anyway
> for
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